Zobrazeno 1 - 10
of 1 440
pro vyhledávání: '"Toussaint D."'
Autor:
Liu Yuzhi, Bailey Jon A., Bazavov A., Bernard C., Bouchard C. M., DeTar C., Du Daping, El-Khadra A. X., Freeland E. D., Gámiz E., Gelzer Z., Gottlieb Steven, Heller U. M., Kronfeld A. S., Laiho J., Mackenzie P. B., Meurice Y., Neil E. T., Simone J. N., Sugar R., Toussaint D., Van de Water R. S., Zhou Ran
Publikováno v:
EPJ Web of Conferences, Vol 175, p 13008 (2018)
Using the MILC 2+1 flavor asqtad quark action ensembles, we are calculating the form factors f0 and f+ for the semileptonic Bs → Kℓv decay. A total of six ensembles with lattice spacing from ≈ 0.12 to 0.06 fm are being used. At the coarsest and
Externí odkaz:
https://doaj.org/article/571ad1bc79654322b785f65195a3e306
Autor:
Gelzer Zechariah, Bernard C., Tar C. De, El-Khadra AX, Gámiz E., Gottlieb Steven, Kronfeld Andreas S., Liu Yuzhi, Meurice Y., Simone J.N., Toussaint D., Water R.S. Van de, Zhou R.
Publikováno v:
EPJ Web of Conferences, Vol 175, p 13024 (2018)
We report the status of an ongoing lattice-QCD calculation of form factors for exclusive semileptonic decays of B mesons with both charged currents (B → πlv, Bs → Klv) and neutral currents (B → πl+l-, B → Kl+l-). The results are important f
Externí odkaz:
https://doaj.org/article/e3f0cf5b62c148169f73b2ac434fc25a
Autor:
Bazavov, A., DeTar, C. E., Du, Daping, El-Khadra, A. X., Gámiz, E., Gelzer, Z., Gottlieb, Steven, Heller, U. M., Kronfeld, A. S., Laiho, J., Mackenzie, P. B., Simone, J. N., Sugar, R., Toussaint, D., Van de Water, R. S., Vaquero, A.
Publikováno v:
Eur. Phys. J. C 82, 1141 (2022)
We present the first unquenched lattice-QCD calculation of the form factors for the decay $B\rightarrow D^\ast\ell\nu$ at nonzero recoil. Our analysis includes 15 MILC ensembles with $N_f=2+1$ flavors of asqtad sea quarks, with a strange quark mass c
Externí odkaz:
http://arxiv.org/abs/2105.14019
Autor:
Gelzer, Z., DeTar, C., El-Khadra, A. X., Gámiz, E., Gottlieb, Steven, Kronfeld, Andreas S., Liu, Yuzhi, Meurice, Y., Simone, J. N., Toussaint, D., Van de Water, R. S.
We report updates to an ongoing lattice-QCD calculation of the form factors for the semileptonic decays $B \to \pi \ell \nu$, $B_s \to K \ell \nu$, $B \to \pi \ell^+ \ell^-$, and $B \to K \ell^+ \ell^-$. The tree-level decays $B_{(s)} \to \pi (K) \el
Externí odkaz:
http://arxiv.org/abs/1912.13358
Autor:
Davies, C. T. H., DeTar, C. E., El-Khadra, A. X., Gámiz, E., Gottlieb, Steven, Hatton, D., Kronfeld, A. S., Laiho, J., Lepage, G. P., Liu, Yuzhi, Mackenzie, P. B., McNeile, C., Neil, E. T., Primer, T., Simone, J. N., Toussaint, D., Van de Water, R. S., Vaquero, A., Yamamoto, Shuhei
We present an update on the ongoing calculations by the Fermilab Lattice, HPQCD, and MILC Collaboration of the leading-order (in electromagnetism) hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon. Our project emp
Externí odkaz:
http://arxiv.org/abs/1912.04382
Autor:
Davies, C. T. H., DeTar, C., El-Khadra, A. X., Gamiz, E., Gottlieb, Steven, Hatton, D., Kronfeld, A. S., Laiho, J., Lepage, G. P., Liu, Yuzhi, Mackenzie, P. B., McNeile, C., Neil, E. T., Primer, T., Simone, J. N., Toussaint, D., Van de Water, R. S., Vaquero, A.
Publikováno v:
Phys. Rev. D 101, 034512 (2020)
We calculate the contribution to the muon anomalous magnetic moment hadronic vacuum polarization from {the} connected diagrams of up and down quarks, omitting electromagnetism. We employ QCD gauge-field configurations with dynamical $u$, $d$, $s$, an
Externí odkaz:
http://arxiv.org/abs/1902.04223
Autor:
Li, Ruizi, Bazavov, A., Bernard, C. W., DeTar, C., Du, Daping, El-Khadra, A. X., Gámiz, E., Gottlieb, Steven, Heller, U. M., Komijani, J., Kronfeld, A. S., Laiho, J., Mackenzie, P. B., Neil, E. T., Primer, T., Simone, J. N., Sugar, R. L., Toussaint, D., Van de Water, R. S., Zhou, Ran
We discuss preliminary results for the vector form factors $f_+^{\{\pi,K\}}$ at zero-momentum transfer for the decays $D\to\pi\ell\nu$ and $D\to K \ell\nu$ using MILC's $N_f = 2+1+1$ HISQ ensembles at four lattice spacings, $a \approx 0.042, 0.06, 0.
Externí odkaz:
http://arxiv.org/abs/1901.08989
Autor:
Bazavov, A., Bernard, C., DeTar, C., Du, Daping, El-Khadra, A. X., Freeland, E. D., Gámiz, E., Gelzer, Z., Gottlieb, Steven, Heller, U. M., Kronfeld, A. S., Laiho, J., Liu, Yuzhi, Mackenzie, P. B., Meurice, Y., Neil, E. T., Simone, J. N., Toussaint, D., Van de Water, R. S., Zhou, Ran
Publikováno v:
Phys. Rev. D 100, 034501 (2019)
We use lattice QCD to calculate the form factors $f_+(q^2)$ and $f_0(q^2)$ for the semileptonic decay $B_s\to K\ell\nu$. Our calculation uses six MILC asqtad 2+1 flavor gauge-field ensembles with three lattice spacings. At the smallest and largest la
Externí odkaz:
http://arxiv.org/abs/1901.02561
Publikováno v:
In European Journal of Mechanics / A Solids March-April 2023 98
Autor:
Lattice, Fermilab, MILC, Collaborations, TUMQCD, Bazavov, A., Bernard, C., Brambilla, N., Brown, N., DeTar, C., El-Khadra, A. X., Gámiz, E., Gottlieb, Steven, Heller, U. M., Komijani, J., Kronfeld, A. S., Laiho, J., Mackenzie, P. M., Neil, E. T., Simone, J. N., Sugar, R. L., Toussaint, D., Van de Water, R. S., Vairo, A.
We describe a recent lattice-QCD calculation of the leptonic decay constants of heavy-light pseudoscalar mesons containing charm and bottom quarks and of the masses of the up, down, strange, charm, and bottom quarks. Results for these quantities are
Externí odkaz:
http://arxiv.org/abs/1810.00250